CVE-2026-43345 (GCVE-0-2026-43345)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:39 – Updated: 2026-05-08 13:39
VLAI?
Title
net: ipa: fix event ring index not programmed for IPA v5.0+
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ipa: fix event ring index not programmed for IPA v5.0+ For IPA v5.0+, the event ring index field moved from CH_C_CNTXT_0 to CH_C_CNTXT_1. The v5.0 register definition intended to define this field in the CH_C_CNTXT_1 fmask array but used the old identifier of ERINDEX instead of CH_ERINDEX. Without a valid event ring, GSI channels could never signal transfer completions. This caused gsi_channel_trans_quiesce() to block forever in wait_for_completion(). At least for IPA v5.2 this resolves an issue seen where runtime suspend, system suspend, and remoteproc stop all hanged forever. It also meant the IPA data path was completely non functional.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: faf0678ec8a0aa9039d8b188d012206abd67dd5c , < ae8343a19ccb051d519dbb3a9082ddea9f0551d3 (git)
Affected: faf0678ec8a0aa9039d8b188d012206abd67dd5c , < 2bf18b643c4656413f7cfd5615af60a6b4e261da (git)
Affected: faf0678ec8a0aa9039d8b188d012206abd67dd5c , < 2d2dc166d55148cfcf8ae67b415f8d6d110e6fca (git)
Affected: faf0678ec8a0aa9039d8b188d012206abd67dd5c , < 34c988bb04cbdf093d2134e179433da49ffcd044 (git)
Affected: faf0678ec8a0aa9039d8b188d012206abd67dd5c , < 56007972c0b1e783ca714d6f1f4d6e66e531d21f (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.136 , ≤ 6.6.* (semver)
Unaffected: 6.12.83 , ≤ 6.12.* (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ipa/reg/gsi_reg-v5.0.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ipa/reg/gsi_reg-v5.0.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.83",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionEndExcluding": "7.0",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipa: fix event ring index not programmed for IPA v5.0+\n\nFor IPA v5.0+, the event ring index field moved from CH_C_CNTXT_0 to\nCH_C_CNTXT_1. The v5.0 register definition intended to define this\nfield in the CH_C_CNTXT_1 fmask array but used the old identifier of\nERINDEX instead of CH_ERINDEX.\n\nWithout a valid event ring, GSI channels could never signal transfer\ncompletions. This caused gsi_channel_trans_quiesce() to block\nforever in wait_for_completion().\n\nAt least for IPA v5.2 this resolves an issue seen where runtime\nsuspend, system suspend, and remoteproc stop all hanged forever. It\nalso meant the IPA data path was completely non functional."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T13:39:31.222Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae8343a19ccb051d519dbb3a9082ddea9f0551d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/2bf18b643c4656413f7cfd5615af60a6b4e261da"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d2dc166d55148cfcf8ae67b415f8d6d110e6fca"
        },
        {
          "url": "https://git.kernel.org/stable/c/34c988bb04cbdf093d2134e179433da49ffcd044"
        },
        {
          "url": "https://git.kernel.org/stable/c/56007972c0b1e783ca714d6f1f4d6e66e531d21f"
        }
      ],
      "title": "net: ipa: fix event ring index not programmed for IPA v5.0+",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43345",
    "datePublished": "2026-05-08T13:39:31.222Z",
    "dateReserved": "2026-05-01T14:12:56.003Z",
    "dateUpdated": "2026-05-08T13:39:31.222Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43345",
      "date": "2026-05-09",
      "epss": "0.00018",
      "percentile": "0.04917"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43345\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-08T14:16:44.547\",\"lastModified\":\"2026-05-08T14:16:44.547\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ipa: fix event ring index not programmed for IPA v5.0+\\n\\nFor IPA v5.0+, the event ring index field moved from CH_C_CNTXT_0 to\\nCH_C_CNTXT_1. The v5.0 register definition intended to define this\\nfield in the CH_C_CNTXT_1 fmask array but used the old identifier of\\nERINDEX instead of CH_ERINDEX.\\n\\nWithout a valid event ring, GSI channels could never signal transfer\\ncompletions. This caused gsi_channel_trans_quiesce() to block\\nforever in wait_for_completion().\\n\\nAt least for IPA v5.2 this resolves an issue seen where runtime\\nsuspend, system suspend, and remoteproc stop all hanged forever. It\\nalso meant the IPA data path was completely non functional.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2bf18b643c4656413f7cfd5615af60a6b4e261da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2d2dc166d55148cfcf8ae67b415f8d6d110e6fca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34c988bb04cbdf093d2134e179433da49ffcd044\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/56007972c0b1e783ca714d6f1f4d6e66e531d21f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ae8343a19ccb051d519dbb3a9082ddea9f0551d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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